Electrical hot-water apparatus.



J. VON HENTZEL.

ELECTRICAL HOT WATER APPARATUS.

APPLICATION FILED DECT 16| i914.

Patented Jan. 4, 1916.

Ty/ 0% e 2 ww A@ coLuMmA PLANOHRAPH cn., WASHINGTON. J. c.

JOHANN VON HENTZEL, OFNEW YORK, N. Y.

ELECTRICAL HOT-WATER APPARATUS.

- Specification of Letters Patent.

Patented Jan. 4, 1916.

Application filed December 16, 1914. Serial No. 877,533.

To all whom t may concern? Beit known that I, JOHANN VON' HENTZEL, constructing engineer, a subject of Russia, residing in the city, county and State of New York, have invented certain new and useful Improvements in Electrical Hot- Water Apparatus, of which the following is a specification.

The known electrically heated hot water apparatus show many disadvantages and inconveniences in use. The heated water will deposit substances, such as carbonates, sulfates and oxids in the ring-shaped electrode chamber, so that after a short time a conductive connection will beformed between the electrodes. Besides, the electrodes, particularly when direct current is used, are worn after a short time to such an extent that they will cease to act as such. This `will prevent the proper working of the ap# paratus. It will then have to be returned to the manufacturer in order to be taken apart, cleaned and if necessary even -be fitted with new electrodes. The user, physician, dentist or person who utilizes the apparatus as a sterilizing agent, will of course suffer by the loss of time. These disadvantages are ob- Viated by rthe present application an improvement on my Patent :#1081114 granted on Dec. 9th, 1913 and on my second application, Serial #810830 filed Jan. 7th, 1914, according to which a readily exchangeable vessel containing the electrodes is litted on the base containing the water supply, and is secured in this position by a lid being.

screwed down on it. The water that flows through the space between the electrodes serves as a resistance. The apparatus 1s supplied with a duplicate vessel which may ref place the other one ina very simple manner without any loss of time whatsoever.

In the accompanying drawing the pre-` ferred form of hot water apparatus according to the present invention is illustrated as an example.

Figure I is a vertical section through the apparatus. Fig. Il is a Vertical section through the duplicate part.l

The metallic discharge tube 1 is insulated from the nut 3 by the rubber insulator 2to prevent the passage of heat from one to the other; this nut is also of metal. It is threaded onthe outside and is yscrewed into the metal cap 4. The nut 3 pushes down upon the insulator 5; this insulator 5 presses upon flange 6, which is part of discharge pipe l;

flange pushes down upon insulator 7 and the entire pressure falls upon the top cover 22 of the inner shell; so that the pressure from the upper portion is so exerted that the entire inner shell presses upon the der holds the connection 14 for the inlet tube. `The'cap of the cylinder'shown as 4 also of metal is screwed down on the cylinder proper.

10 is a fiber insulator used to insulate the outer cylinder from the inner shell, but between the insulation and inner shell is found a cylindrical air gap.

The current leads are shown as 9 and 9A, 9 being positive and 9A negative. The current leads are attached to the'fiber insulator 10. The current leads 9 press against the wall of the inner vessel 15, while the current leads 9A touch from underneath the metal washer 24. Thus the inner vessel 15 is held in place by the current leads 9 and 9A. The lower part, 11, of the outer cylinder is bored to make room for the rubber washer 12, upon which rests the inner shell. 13 is also a rubber washer.

15 is the metallic cylindrical casing of the inner shell. y

16 is the outer hollow cylindrical electrode, which is fitted tightly into the shell, the inner electrode is shown at 17; this electrode 17 is composed of magnetic iron oxid. The mica insulators 18 and 18A are used to insulate the under surface of the cover of the shell and also to insulate the upper surface of the bottom of the shell. The main purpose of thesev two mica insulators is to protect the metal from oxidizing influence resulting from electric currents 1n the water. The upper portion of the metallic pin 19 is threaded to receive and hold firmly the electrode 17. The lower partof the pin 19 has an inner bore 19C, which opens into the diametric bore 19B in the iange 19A which 'acts as an exit through which water passing up from the inlet pipe 14 lows through the annular space which s ound between the two electrodes and` then out through the discharge tube. V f

2O is a rubber insulator used to insulate the lower portionof the p-n from the under surface of the flange from thebase @i the shell 21.

,21. and 2.2,. wlnda. are.. the QQVelSO the Shell. are. both, seldered 0.1.1, to the. shell proper; the. insulator 7. previously men.- tQned. directly 01.1. the @over a rubber.- DSul'atOm insulating 2.1.. from themenallfic washer-'24a' This Serves 21S 11.11. @Metric conduaor siaceit. isili; electrical aantast. wihboth piaL 1.9 ml the electrode l1 and. the current. Q#- TheA hexagonal nut 25 holds together the ipsulaiors 20., the metalli@ washer? 242.119@ the iin-age 1.9.

is the commu-.ing switch fior the. devise.. f Eig.. 1.12 istlaedupljcate vessel whiela when.

necessary, can bww-hanged without; any QP# precable loss of time.

f Apparatus ism 1mm/ia by e199 tri'city', comprising an' outer casing, closure caps at each end of said casing, inlet and connections for said closure @lciode having', at the lower end and centrally thereof an opening for th@ Passage '0f liquids. in. direct. @anaemia-the; 1.31%. @maintien .et one. 0f

the ensures, .a hollow dectrade,

spaced eutmrglly wound. wlw elec.-

im fam @mit ier the liquid.

and. gm. yOpfwllag is. end

u1 .dkrwammnmmtm wth outlet of one of the closure caps, sup 4 mre; the eltrodse und 'insulating was.: the. from the Qasmg.

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